Stacy wants to make 100 name tags with ribbons attached to them. each name tag requires 5 centimeter of ribbon. she has 3.25 meters of ribbon. exactly how many more centimeters of ribbon does stacy still need to make 100 name tags

Each meter has 100 centimeters. With just 1 meter, you can make 20 name tags with ribbons. So in order to make all of the name tags, you need 5 meters. 5 - 3.25 = 1.75. You need 1.75 more meters of ribbon to make all 100 of the name tags with ribbons.